6320/C3 Deep Groove Ball Bearing 100x215x47mm for Heavy‑Duty Rotating Shaft Product Overview 6320/C3 is open‑type single‑row deep groove ball bearing with C3 enlarged internal clearance. It mainly carries radial load and can also bear small bidirectional axial loads for large‑size rotating assemblies. C3 larger clearance compensates shaft thermal expansion under high‑temperature running conditions. Open‑type structure without built‑in grease, proper grease or oil lubrication